Method and device for controlling a construction machine
CA 2227681 C · Owner: Hikiyama, Mitsuru · Inventors: Miki, Masatoshi; Ega, Regis; Hikiyama, Mitsuru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A signal sending device 21 which stores therein proper data such as an accelerator position, and a pump output concerning operating conditions, such as supply hydraulic pressure and flow rate, appropriate for a working attachment to be attached to the front part of a hydraulic excavator or the like is mounted on the working attachment. The body of a hydraulic excavator is provided with a controller 11 adapted to control the hydraulic sources by receiving and storing proper data sent from the signal sending device 21. The signal sending device 21 includes a ROM 31 for storing proper data for each working attachment a CPU 32 for retrieving proper data from the ROM 31 and a data communication …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed February 24, 1998 and granted April 30, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 24, 2020.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.